Senior Implementation Specialist

Overview As a Senior Client Success Engineer, you lead the design and execution of scalable technical solutions during late-stage sales and complex onboarding initiatives. Acting as a trusted technical advisor, you take ownership of high-impact client projects, mentor team members, and drive process improvements that elevate client success outcomes. In this senior role, you bridge technical discovery with delivery, ensuring long-term value and satisfaction across strategic accounts.

Responsibilities Lead technical discovery and solution design during late-stage sales engagements for strategic clients

Develop complex implementation plans and ensure seamless handoffs to delivery and support teams

Own the technical implementation and optimization of high-impact client projects, customizing solutions to meet unique business requirements

Serve as the primary technical contact for advanced issues related to software, product data feeds, API integrations, and FTP

Provide expert-level platform training and consultation to client stakeholders

Partner with Sales, Product, Engineering, and Client Success to ensure client needs are met and technical challenges are addressed

Mentor and coach junior Client success engineers, supporting knowledge sharing and technical skill development

Drive cross-functional initiatives that improve internal processes, workflows, and client engagement practices

Develop technical enablement resources (e.g., webinars, videos, documentation) to support onboarding and education at scale

Communicate complex technical concepts clearly to both technical and non-technical stakeholders

Represent the voice of the client in product feedback loops, collaborating with Product Management on feature evolution

Take ownership of high-risk client situations, ensuring proactive intervention and resolution

Qualifications Minimum Qualifications

3+ years of experience in a client-facing technical role within SaaS, with a focus on onboarding or solution engineering for enterprise-level clients

Fluent in both written and spoken English

Deep experience with product data feed formats (XML, TXT, CSV, JSON) and FTP protocols

Advanced expertise in REST and SOAP API integrations and troubleshooting

Strong working knowledge of Excel and HTML

Demonstrated ability to manage multiple complex client projects simultaneously

Excellent problem-solving, time management, and prioritization skills

Strong communication and presentation skills for technical and non-technical audiences

Proven ability to document processes and create technical enablement materials

Ability to thrive in a fast-paced, dynamic environment and adapt to evolving priorities

Preferred Qualifications

Bachelor's degree in computer science, Information Technology, or a related field

5+ years of experience in a client-facing technical role within SaaS, with a focus on onboarding or solution engineering for enterprise-level clients

Additional language proficiency is a plus

Experience working with enterprise clients and / or within the e-commerce industry

Familiarity with remote-based training tools

Project Management experience or certification (e.g., PMP, Agile)

Demonstrated success in developing online technical training content

A proactive, entrepreneurial mindset with the ability to work independently and lead initiatives

Travel Up to 10%

Other Duties Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

What it’s like to work at Rithum When you join Rithum, you can expect to work with smart risk-takers, courageous collaborators, and curious minds.

As part of the Rithum team, you are valued, supported, and included. Guided by a transparent culture and accessible, approachable leadership, we offer career opportunities aligned to your ambitions and talents. To ensure work and life balance works for you, we also offer an array of resources to support you and your families, including comprehensive benefits and wellness plans.

At Rithum you will :

Partner with the leading brands and retailers.

Connect with passionate professionals who will help support your goals.

Participate in an inclusive, welcoming work atmosphere.

Achieve work-life balance through remote-first working conditions, generous time off, and wellness days.

Receive industry-competitive compensation and total rewards benefits.

Medical, Dental and Psychology benefits

Life insurance and disability benefits

Competitive time off package with 25 Days of PTO, 13 Company-Paid Holidays, 2 Wellness days and 1 Paid Volunteer Day

Voucher program for Transportation, Meals & Childcare

Work from the Madrid co-working space, if desired

Remote Working Stipend : €40 / month automatically applied in payroll

Access to tools to support your wellbeing such as the Calm App and an Employee Assistance Program

Professional development stipend and learning and development offerings to help you build the skills and connections you need to move forward in your career.

Charitable contribution match per team member

Equal Opportunity

Rithum is an equal opportunity employer. We are committed to providing an environment of mutual respect where equal employment opportunities are available to all applicants and teammates without regard to race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other protected characteristic. All employment is decided on the basis of qualifications, merit, and business need.

We are committed to providing reasonable accommodations in accordance with the law for qualified applicants. If you require assistance during the interview process due to a medical condition or need support accessing our website or completing the application process, please reach out to us by completing the Accommodations Request Form. Your comfort and accessibility are important to us, and we\'re here to ensure a seamless experience as you explore opportunities with our team.

Spanish Equality Plan In alignment with the Spanish Government's efforts to foster gender equality through the implementation of Gender Equality Plans, Rithum is committed to promoting equal treatment and opportunities for all genders. Our Gender Equality Plan includes monitoring the gender distribution among our job applicants to inform hiring strategies.

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